Gp. Otto et Wc. Chew, MICROWAVE INVERSE SCATTERING - LOCAL SHAPE FUNCTION IMAGING FOR IMPROVED RESOLUTION OF STRONG SCATTERERS, IEEE transactions on microwave theory and techniques, 42(1), 1994, pp. 137-141
Local shape function imaging uses far-field microwave scattering data
to reconstruct the presence or absence of small metal cylinders throug
hout space, in order to model arbitrary metallic objects. The reconstr
ucted images represent the scattering amplitude at discrete locations
in space with multiple scattering effects incorporated. Super-resoluti
on is demonstrated for monochromatic image reconstructions. Even bette
r reconstructions are obtained with multiple frequency data. The speed
of computation is increased with a fast forward solver algorithm. Als
o, measured data is used in the local shape function imaging algorithm
and the resolution is improved over diffraction tomography.